Lewis, J. P. (1969). Introduction to mathematics: For students of economics/2e (2nd ed.). Macmillan & Co.
シカゴスタイル引用形Lewis, J. Parry. Introduction to Mathematics: For Students of Economics/2e. 2nd ed. London: Macmillan & Co, 1969.
MLA引用形式Lewis, J. Parry. Introduction to Mathematics: For Students of Economics/2e. 2nd ed. Macmillan & Co, 1969.
警告: この引用は必ずしも正確ではありません.